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Re: gas in the oil and in the exhaust
Spider type fuel delivery inside upper intake known to leak , and with repeated attempts to start , fuel gets into wherever gravity will allow , be sure to drain fuel soaked oil before attempt to start after repair and because fuel is in the exhaust , it might blow the muffler and melt the catalytic converter
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You have to reove the upper plenum. that is the part on top of the intake that looks like a dome on top of the lower intake.There is 8 10mm bolts around the outside of the dome part. the disconnect the fuel lines at back of lower intake and remove the cpi unit.
check for spark at the plugs
check firing order in correct direction on cap
in relation to direction of dist rotation remove
cap wind engine to see that distributor drive
gear hasnt stripped a tooth
if these are ok if its electronic dist the module
could be faulty
Check the tps "trottle positioning sensor, on mine the idle would not stay steady, and shift so hard that it would sound like it was going to break something. it is located on the drivers side of the throttle body with a push in electrical connector.
A spider injector is located underneath the intake plenum and this is multi-port. Otherwise you have a throttle body injector system. Vortec engines have spider injectors and they are super expensive to replace ($400.00- 850.00) each ! There is only one spider injector for each engine it has 6 legs/fuel tubes that go to each cylinder.
first try the evapertator cansister valve is open and aloowing to much fuel in the engine, also the fuel injector could be leaking and pushing to much fuel intothe intake, this will wash out the cylinders and put gas in the oil, two things can case this a bad injector or a defective fuel regulator in the injector.
nothing ..normal low pressure at idle while hot ...but really should be thinking fresh oil change and filter soon..also what are the RPM's at idle hot in gear with A/C radio and other accessories running?